摘要
在冲击波、爆轰、兵器、激光等众多研究领域中,均提出了使用单个探头对一个测点进行多种技术同步复测的迫切需求。为实现上述目标,分析了常规和外差式光子多普勒测速技术的工作机理、光学结构和复测难题,设计了一种基于单探头实现常规和外差式光子多普勒测速技术同步复测的方案,并根据该方案搭建了一套新型测速装置。设计了爆轰波加载铝飞片和铅粒子群的考核实验,实验结果显示,使用单个测速探头对单个或多个目标均实现了优异的测速效果,获得了2种技术在单次实验中各自独立测量到的待测目标速度曲线。该研究内容及实验结果对充分研究激光测速技术在单探头多技术复测方面的应用极具意义。
As the investigation is deepened, it is necessary to measure velocity with different techniques based on single probe to a point in the fields of shock waves physics, explosion physics, weapon, intense laser, and so on.The operational principles,optical structures and synchronous measuremental problems of the conventional and heterodyne photonic Doppler velocimetry（PDV） techniques are analyzed. According to the analysis, a novel velocimetry based on single probe, which can measure a target′s velocity by different techniques, is designed and assembled.The aluminum flyer plate and a large number of lead granules loaded by detonation wave are tested by the proposed velocimetry. The experimental results show that the velocities of single or multiple targets are measured well by the novel velocimetry, and the speed curves of the targets under test are obtained in independence measurement by two techniques. The research results can provide a valuable reference for the practical application of the velocimetry to measure a target′s velocity with different techniques simultaneously.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2015年第10期165-171,共7页
Chinese Journal of Lasers
基金
国家自然科学基金(11272298)
中物院科学技术发展基金(2014B0101001)
关键词
光纤光学
光子多普勒测速
速度
光纤测速探头
光学外差
fiber optics
photonic Doppler velocimetry
velocity
fiber probe of velocity measurement
optical heterodyne
